I've been using IPB since 2006 with the MSSQL driver. I was always attracted to the flexibility of the platform with minimal programming.
Recently tech support has become more difficult. It's harder to find code examples and removing the marketplace killed a creativity source for me. I had a stroke a few years ago, so my development skills are retarded, but still I believe this is one of the poorer organized forms in regards to technical documentation.
A wiki, kept up to date by your community, would really help in development IMHO.
Good luck all!
Martin